id	domain	url
stem-6944	www.amazon.com	http://www.amazon.com/alvin-a.-arens/e/b001hd443i/ref=dp_byline_cont_book_1
stem-6944	www.amazon.com	http://www.amazon.com/s/ref=dp_byline_sr_book_2?ie=utf8&text=randal+j.+elder&search-alias=books&field-author=randal+j.+elder&sort=relevancerank
stem-6944	www.amazon.com	http://www.amazon.com/s/ref=dp_byline_sr_book_3?ie=utf8&text=mark+s.+beasley&search-alias=books&field-author=mark+s.+beasley&sort=relevancerank